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Biological silicon nanoparticles improve Phaseolus vulgaris L. yield and minimize its contaminant contents on a heavy metals-contaminated saline soil

journal of environmental sciences 106 (2021) • 2021
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Publication Information
Authors Mohamed T. El-Saadony 1 , El-Sayed M. Desoky 2 , ∗, Ahmed M. Saad 3 , Rania S.M. Eid 4 , Eman Selem 5 , Ahmed S. Elrys 6 , ∗
Keywords Bean Silicon Nano-silicon Aspergillus tubingensis AM11 Salinity Heavy metals
Journal journal of environmental sciences 106 (2021)
Publisher Not Available
Volume 106
Issue Not Available
Pages 1–14
publication.type International
Paper Link Not Available
Supplementary Materials Not Available
Abstract
The

synthesis

of

biological

silicon

nano-particles

(Bio-Si-NPs)

is

an

eco-friendly

and

low

cost

method.

There

is

no

study

focusing

on

the

effect

of

Bio-Si-NPs

on

the

plants

grown

on

saline

soil

contaminated

with

heavy

metals.

In

this

study,

an

attempt

was

made

to

syn

thesis

Bio-Si-NPs

using

potassium

silica

florid

substrate,

and

the

identified

Aspergillus

tub

ingensis

AM11

isolate

that

separated

from

distribution

systems

of

the

potable

water.

A

two

year

field

trial

was

conducted

to

compare

the

protective

effects

of

Bio-Si-NPs

(2.5

and

5.0

mmol/L)

and

potassium

silicate

(10

mmol/L)

as

a

foliar

spray

on

the

antioxidant

defense

system,

physio-biochemical

components,

and

the

contaminants

contents

of

Phaseolus

vul

garis

L.

grown

on

saline

soil

contaminated

with

heavy

metals.

Our

findings

showed

that

all

treatments

of

Bio-Si-NPs

and

potassium

silicate

significantly

improved

plant

growth

and

production,

chlorophylls,

carotenoids,

transpiration

rate,

net

photosynthetic

rate,

stomatal

conductance,

membrane

stability

index,

relative

water

content,

free

proline,

total

soluble

sugars,

N,

P,

K,

Ca

2

+

,

K

+

/Na

+

,

and

the

activities

of

peroxidase,

catalase,

ascorbic

peroxidase

and

superoxide

oxide

dismutase.

Application

of

Bio-Si-NPs

and

potassium

silicate

signifi

cantly

decreased

electrolyte

leakage,

malondialdehyde,

H

2

O

2

,

O

2



−,

Na

+

,

Pb,

Cd,

and

Ni

in

leaves

and

pods

of

Phaseolus

vulgaris

L.

compared

to

control.

Bio-Si-NPs

were

more

effective

compared

to

potassium

silicate.

Application

of

Bio-Si-NPs

at

the

rate

of

5

mmol/L

was

the

recommended

treatment

to

enhance

the

performance

and

reduce

heavy

metals

content

on

plants

grown

on

contaminated

saline

soils.